Fix errors reported by cus-test.el

* ox.el (org-export-async-init-file): Use :set to set the
default value.

* ox-texinfo.el (org-texinfo-filename): Fix default value.
(org-texinfo-format-headline-function): Use 'ignore as the
default value.
(org-texinfo-format-drawer-function): Use a function as the
default value.  Update docstring.
(org-texinfo-drawer): Always use
`org-texinfo-format-drawer-function' as it is now a function
by default.
(org-texinfo-headline): Compare
`org-texinfo-format-headline-function' against 'ignore.
(org-texinfo-inlinetask): Compare
`org-texinfo-format-inlinetask-function' against 'ignore.

* ox-odt.el (org-odt-format-drawer-function): Use a function
as the default value.  Update docstring.
(org-odt-format-headline-function)
(org-odt-format-inlinetask-function): Fix default value.
(org-odt-with-latex): Use :set to set the default value.
(org-odt-drawer): Always use `org-odt-format-drawer-function'
as it is now a function by default.
(org-odt-format-headline--wrap): Compare
`org-odt-format-headline-function' against 'ignore.

* ox-latex.el (org-latex-format-drawer-function): Use a
function as the default value.  Update docstring.
(org-latex-format-inlinetask-function): Fix default value.
(org-latex-drawer): Always use
`org-latex-format-drawer-function' as it is now a function by
default.
(org-latex-inlinetask): Compare
`org-latex-format-inlinetask-function' against 'ignore.

* ox-html.el (org-html-format-drawer-function): Use a
function as the default value.  Update docstring.
(org-html-format-headline-function)
(org-html-format-inlinetask-function): Fix default value.
(org-html-with-latex): Use :set to set the default value.
(org-html--format-toc-headline)
(org-html-format-headline--wrap): Compare
`org-html-format-headline-function' against 'ignore.
(org-html-inlinetask): Compare
`org-html-format-inlinetask-function' against 'ignore.

* ox-ascii.el (org-ascii-format-drawer-function): Use a
function as the default value.  Update docstring.
(org-ascii-drawer): Always use
`org-ascii-format-drawer-function' as it is now a function by
default.
(org-ascii-format-inlinetask-default): New function.
(org-ascii-format-inlinetask-function): Use
`org-ascii-format-inlinetask-default' as the default.

* org.el (org-mouse-1-follows-link): Use :set to set the
default value.  Update custom type.
(org-log-note-headings): Fix order or list items in the custom
type.
(orgstruct-heading-prefix-regexp): Use an empty string as the
default value.  Use 'regexp as the custom type.
(orgstruct-make-binding): Tiny docstring enhancement.  Assume
`orgstruct-heading-prefix-regexp' is a string.

* org-agenda.el (org-agenda-search-view-max-outline-level):
Set default value to 0.  Update docstring.
(org-agenda-deadline-leaders): Fix custom type.
(org-search-view): Assume
`org-agenda-search-view-max-outline-level' is a number.

* ob-ruby.el (org-babel-ruby-nil-to): Fix custom type.

* ob-python.el (org-babel-python-mode): Use :set to set the
default value.
(org-babel-python-None-to): Fix custom type.

* ob-plantuml.el (org-plantuml-jar-path): Fix default value.
(org-babel-execute:plantuml): Assume `org-plantuml-jar-path'
is a string.

* ob-latex.el (org-babel-latex-htlatex): Fix default value.
(org-babel-latex-htlatex-packages): Fix custom type.
(org-babel-execute:latex): Assume `org-babel-latex-htlatex' is
a string.

Thanks to Glenn Morris for reporting this.

lisp/ob-latex.el

@@ -50,7 +50,7 @@
   '((:results . "latex") (:exports . "results"))
   "Default arguments to use when evaluating a LaTeX source block.")
 
-(defcustom org-babel-latex-htlatex nil
+(defcustom org-babel-latex-htlatex ""
   "The htlatex command to enable conversion of latex to SVG or HTML."
   :group 'org-babel
   :type 'string)
@@ -59,7 +59,7 @@
   '("[usenames]{color}" "{tikz}" "{color}" "{listings}" "{amsmath}")
   "Packages to use for htlatex export."
   :group 'org-babel
-  :type '(list string))
+  :type '(list (string)))
 
 (defun org-babel-expand-body:latex (body params)
   "Expand BODY according to PARAMS, return the expanded body."
@@ -141,7 +141,7 @@ This function is called by `org-babel-execute-src-block'."
 		(delete-file transient-pdf-file))))))
 	 ((and (or (string-match "\\.svg$" out-file)
 		   (string-match "\\.html$" out-file))
-	       org-babel-latex-htlatex)
+	       (not (string= "" org-babel-latex-htlatex)))
 	  (with-temp-file tex-file
 	    (insert (concat
 		     "\\documentclass[preview]{standalone}

lisp/ob-plantuml.el

@@ -40,7 +40,7 @@
   '((:results . "file") (:exports . "results"))
   "Default arguments for evaluating a plantuml source block.")
 
-(defcustom org-plantuml-jar-path nil
+(defcustom org-plantuml-jar-path ""
   "Path to the plantuml.jar file."
   :group 'org-babel
   :version "24.1"
@@ -55,7 +55,7 @@ This function is called by `org-babel-execute-src-block'."
 	 (cmdline (cdr (assoc :cmdline params)))
 	 (in-file (org-babel-temp-file "plantuml-"))
 	 (java (or (cdr (assoc :java params)) ""))
-	 (cmd (if (not org-plantuml-jar-path)
+	 (cmd (if (string= "" org-plantuml-jar-path)
 		  (error "`org-plantuml-jar-path' is not set")
 		(concat "java " java " -jar "
 			(shell-quote-argument

lisp/ob-python.el

@@ -47,14 +47,16 @@
   :group 'org-babel
   :type 'string)
 
-(defcustom org-babel-python-mode
-  (if (or (featurep 'xemacs) (featurep 'python-mode)) 'python-mode 'python)
+(defcustom org-babel-python-mode 'python
   "Preferred python mode for use in running python interactively.
 This will typically be either 'python or 'python-mode."
   :group 'org-babel
   :version "24.4"
   :package-version '(Org . "8.0")
-  :type 'function)
+  :set (lambda (var val)
+	 (set-default var (if (or (featurep 'xemacs) (featurep 'python-mode))
+			      'python-mode 'python)))
+  :type 'symbol)
 
 (defvar org-src-preserve-indentation)
 
@@ -70,7 +72,7 @@ This will typically be either 'python or 'python-mode."
   :group 'org-babel
   :version "24.4"
   :package-version '(Org . "8.0")
-  :type 'string)
+  :type 'symbol)
 
 (defun org-babel-execute:python (body params)
   "Execute a block of Python code with Babel.

lisp/ob-ruby.el

@@ -62,9 +62,7 @@
   :group 'org-babel
   :version "24.4"
   :package-version '(Org . "8.0")
-  :type 'string)
-
-
+  :type 'symbol)
 
 (defun org-babel-execute:ruby (body params)
   "Execute a block of Ruby code with Babel.

lisp/org-agenda.el

@@ -1419,13 +1419,14 @@ When nil, they may also match part of a word."
   :version "24.1"
   :type 'boolean)
 
-(defcustom org-agenda-search-view-max-outline-level nil
+(defcustom org-agenda-search-view-max-outline-level 0
   "Maximum outline level to display in search view.
 E.g. when this is set to 1, the search view will only
-show headlines of level 1."
+show headlines of level 1.  When set to 0, the default
+value, don't limit agenda view by outline level."
   :group 'org-agenda-search-view
   :version "24.4"
-  :package-version '(Org . "8.0")
+  :package-version '(Org . "8.3")
   :type 'integer)
 
 (defgroup org-agenda-time-grid nil
@@ -1746,10 +1747,9 @@ to capture the number of days."
   :version "24.4"
   :package-version '(Org . "8.0")
   :type '(list
-	  (string :tag "Deadline today   ")
-	  (choice :tag "Deadline relative"
-		  (string :tag "Format string")
-		  (function))))
+	  (string :tag "Deadline today          ")
+	  (string :tag "Deadline in the future  ")
+	  (string :tag "Deadline in the past    ")))
 
 (defcustom org-agenda-remove-times-when-in-prefix t
   "Non-nil means remove duplicate time specifications in agenda items.
@@ -4583,7 +4583,7 @@ in `org-agenda-text-search-extra-files'."
 		    (goto-char (max (point-min) (1- (point))))
 		    (while (re-search-forward regexp nil t)
 		      (org-back-to-heading t)
-		      (while (and org-agenda-search-view-max-outline-level
+		      (while (and (not (zerop org-agenda-search-view-max-outline-level))
 				  (> (org-reduced-level (org-outline-level))
 				     org-agenda-search-view-max-outline-level)
 				  (forward-line -1)
@@ -4593,7 +4593,7 @@ in `org-agenda-text-search-extra-files'."
 			    beg1 (point)
 			    end (progn
 				  (outline-next-heading)
-				  (while (and org-agenda-search-view-max-outline-level
+				  (while (and (not (zerop org-agenda-search-view-max-outline-level))
 					      (> (org-reduced-level (org-outline-level))
 						 org-agenda-search-view-max-outline-level)
 					      (forward-line 1)

lisp/org.el

@@ -1725,13 +1725,20 @@ In tables, the special behavior of RET has precedence."
   :group 'org-link-follow
   :type 'boolean)
 
-(defcustom org-mouse-1-follows-link
-  (if (boundp 'mouse-1-click-follows-link) mouse-1-click-follows-link t)
+(defcustom org-mouse-1-follows-link 450
   "Non-nil means mouse-1 on a link will follow the link.
 A longer mouse click will still set point.  Does not work on XEmacs.
 Needs to be set before org.el is loaded."
   :group 'org-link-follow
-  :type 'boolean)
+  :version "24.4"
+  :package-version '(Org . "8.3")
+  :set (lambda (var val)
+	 (set-default var (if (boundp 'mouse-1-click-follows-link)
+			      mouse-1-click-follows-link t)))
+  :type '(choice 
+	  (const :tag "A double click follows the link" 'double)
+	  (const :tag "Unconditionally follow the link with mouse-1" t)
+	  (integer :tag "mouse-1 click does not follow the link if longer than N ms" 450)))
 
 (defcustom org-mark-ring-length 4
   "Number of different positions to be recorded in the ring.
@@ -2663,12 +2670,12 @@ agenda log mode depends on the format of these entries."
 			    "Heading when changing todo state (todo sequence only)"
 			    state) string)
 	       (cons (const :tag "Heading when just taking a note" note) string)
-	       (cons (const :tag "Heading when clocking out" clock-out) string)
-	       (cons (const :tag "Heading when an item is no longer scheduled" delschedule) string)
 	       (cons (const :tag "Heading when rescheduling" reschedule) string)
+	       (cons (const :tag "Heading when an item is no longer scheduled" delschedule) string)
 	       (cons (const :tag "Heading when changing deadline"  redeadline) string)
 	       (cons (const :tag "Heading when deleting a deadline" deldeadline) string)
-	       (cons (const :tag "Heading when refiling" refile) string)))
+	       (cons (const :tag "Heading when refiling" refile) string)
+	       (cons (const :tag "Heading when clocking out" clock-out) string)))
 
 (unless (assq 'note org-log-note-headings)
   (push '(note . "%t") org-log-note-headings))
@@ -8850,13 +8857,13 @@ If WITH-CASE is non-nil, the sorting will be case-sensitive."
 ;; command.  There might be problems if any of the keys is otherwise
 ;; used as a prefix key.
 
-(defcustom orgstruct-heading-prefix-regexp nil
+(defcustom orgstruct-heading-prefix-regexp ""
   "Regexp that matches the custom prefix of Org headlines in
 orgstruct(++)-mode."
   :group 'org
   :version "24.4"
-  :package-version '(Org . "8.0")
-  :type 'string)
+  :package-version '(Org . "8.3")
+  :type 'regexp)
 ;;;###autoload(put 'orgstruct-heading-prefix-regexp 'safe-local-variable 'stringp)
 
 (defcustom orgstruct-setup-hook nil
@@ -9017,8 +9024,8 @@ buffer.  It will also recognize item context in multiline items."
   "Create a function for binding in the structure minor mode.
 FUN is the command to call inside a table.  KEY is the key that
 should be checked in for a command to execute outside of tables.
-Non-nil DISABLE-WHEN-HEADING-PREFIX means to disable the command
-if `orgstruct-heading-prefix-regexp' is non-nil."
+Non-nil `disable-when-heading-prefix' means to disable the command
+if `orgstruct-heading-prefix-regexp' is not empty."
   (let ((name (concat "orgstruct-hijacker-" (symbol-name fun))))
     (let ((nname name)
 	  (i 0))
@@ -9044,14 +9051,13 @@ if `orgstruct-heading-prefix-regexp' is non-nil."
 		   (key-description key) "'."
 		   (when disable-when-heading-prefix
 		     (concat
-		      "\nIf `orgstruct-heading-prefix-regexp' is non-nil, this command will always fall\n"
+		      "\nIf `orgstruct-heading-prefix-regexp' is not empty, this command will always fall\n"
 		      "back to the default binding due to limitations of Org's implementation of\n"
 		      "`" (symbol-name fun) "'.")))
 	  (interactive "p")
 	  (let* ((disable
-		  ,(when disable-when-heading-prefix
-		     '(and orgstruct-heading-prefix-regexp
-			   (not (string= orgstruct-heading-prefix-regexp "")))))
+		  ,(and disable-when-heading-prefix
+			'(not (string= orgstruct-heading-prefix-regexp ""))))
 		 (fallback
 		  (or disable
 		      (not

lisp/ox-ascii.el

@@ -336,7 +336,8 @@ Otherwise, place it right after it."
   :package-version '(Org . "8.0")
   :type 'string)
 
-(defcustom org-ascii-format-drawer-function nil
+(defcustom org-ascii-format-drawer-function
+  (lambda (name contents width) contents)
   "Function called to format a drawer in ASCII.
 
 The function must accept three parameters:
@@ -347,63 +348,32 @@ The function must accept three parameters:
 The function should return either the string to be exported or
 nil to ignore the drawer.
 
-For example, the variable could be set to the following function
-in order to mimic default behaviour:
-
-\(defun org-ascii-format-drawer-default (name contents width)
-  \"Format a drawer element for ASCII export.\"
-  contents)"
+The default value simply returns the value of CONTENTS."
   :group 'org-export-ascii
   :version "24.4"
   :package-version '(Org . "8.0")
   :type 'function)
 
-(defcustom org-ascii-format-inlinetask-function nil
+(defcustom org-ascii-format-inlinetask-function
+  'org-ascii-format-inlinetask-default
   "Function called to format an inlinetask in ASCII.
 
-The function must accept six parameters:
-  TODO      the todo keyword, as a string
-  TODO-TYPE the todo type, a symbol among `todo', `done' and nil.
-  PRIORITY  the inlinetask priority, as a string
-  NAME      the inlinetask name, as a string.
-  TAGS      the inlinetask tags, as a list of strings.
-  CONTENTS  the contents of the inlinetask, as a string.
+The function must accept nine parameters:
+  TODO       the todo keyword, as a string
+  TODO-TYPE  the todo type, a symbol among `todo', `done' and nil.
+  PRIORITY   the inlinetask priority, as a string
+  NAME       the inlinetask name, as a string.
+  TAGS       the inlinetask tags, as a list of strings.
+  CONTENTS   the contents of the inlinetask, as a string.
+  WIDTH      the width of the inlinetask, as a number.
+  INLINETASK the inlinetask itself.
+  INFO       the info channel.
 
 The function should return either the string to be exported or
-nil to ignore the inline task.
-
-For example, the variable could be set to the following function
-in order to mimic default behaviour:
-
-\(defun org-ascii-format-inlinetask-default
-  \(todo type priority name tags contents\)
-  \"Format an inline task element for ASCII export.\"
-  \(let* \(\(utf8p \(eq \(plist-get info :ascii-charset\) 'utf-8\)\)
-           \(width org-ascii-inlinetask-width\)
-    \(org-ascii--indent-string
-     \(concat
-      ;; Top line, with an additional blank line if not in UTF-8.
-      \(make-string width \(if utf8p ?━ ?_\)\)  \"\\n\"
-      \(unless utf8p \(concat \(make-string width ? \) \"\\n\"\)\)
-      ;; Add title.  Fill it if wider than inlinetask.
-      \(let \(\(title \(org-ascii--build-title inlinetask info width\)\)\)
-	\(if \(<= \(length title\) width\) title
-	  \(org-ascii--fill-string title width info\)\)\)
-      \"\\n\"
-      ;; If CONTENTS is not empty, insert it along with
-      ;; a separator.
-      \(when \(org-string-nw-p contents\)
-        \(concat \(make-string width \(if utf8p ?─ ?-\)\) \"\\n\" contents\)\)
-      ;; Bottom line.
-      \(make-string width \(if utf8p ?━ ?_\)\)\)
-     ;; Flush the inlinetask to the right.
-     \(- \(plist-get info :ascii-width\)
-        \(plist-get info :ascii-margin\)
-        \(plist-get info :ascii-inner-margin\)
-        \(org-ascii--current-text-width inlinetask info\)\)"
+nil to ignore the inline task."
   :group 'org-export-ascii
   :version "24.4"
-  :package-version '(Org . "8.0")
+  :package-version '(Org . "8.3")
   :type 'function)
 
 
@@ -1071,11 +1041,7 @@ CONTENTS holds the contents of the block.  INFO is a plist
 holding contextual information."
   (let ((name (org-element-property :drawer-name drawer))
 	(width (org-ascii--current-text-width drawer info)))
-    (if (functionp org-ascii-format-drawer-function)
-	(funcall org-ascii-format-drawer-function name contents width)
-      ;; If there's no user defined function: simply
-      ;; display contents of the drawer.
-      contents)))
+    (funcall org-ascii-format-drawer-function name contents width)))
 
 
 ;;;; Dynamic Block
@@ -1228,55 +1194,58 @@ contextual information."
 
 ;;;; Inlinetask
 
+(defun org-ascii-format-inlinetask-default
+    (todo type priority name tags contents width inlinetask info)
+  "Format an inline task element for ASCII export.
+See `org-ascii-format-inlinetask-function' for a description
+of the paramaters."
+  (let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
+	 (width (or width org-ascii-inlinetask-width)))
+    (org-ascii--indent-string
+     (concat
+      ;; Top line, with an additional blank line if not in UTF-8.
+      (make-string width (if utf8p ?━ ?_)) "\n"
+      (unless utf8p (concat (make-string width ? ) "\n"))
+      ;; Add title.  Fill it if wider than inlinetask.
+      (let ((title (org-ascii--build-title inlinetask info width)))
+	(if (<= (length title) width) title
+	  (org-ascii--fill-string title width info)))
+      "\n"
+      ;; If CONTENTS is not empty, insert it along with
+      ;; a separator.
+      (when (org-string-nw-p contents)
+        (concat (make-string width (if utf8p ?─ ?-)) "\n" contents))
+      ;; Bottom line.
+      (make-string width (if utf8p ?━ ?_)))
+     ;; Flush the inlinetask to the right.
+     (- org-ascii-text-width org-ascii-global-margin
+	(if (not (org-export-get-parent-headline inlinetask)) 0
+	  org-ascii-inner-margin)
+	(org-ascii--current-text-width inlinetask info)))))
+
 (defun org-ascii-inlinetask (inlinetask contents info)
   "Transcode an INLINETASK element from Org to ASCII.
 CONTENTS holds the contents of the block.  INFO is a plist
 holding contextual information."
   (let ((width (org-ascii--current-text-width inlinetask info)))
-    ;; If `org-ascii-format-inlinetask-function' is provided, call it
-    ;; with appropriate arguments.
-    (if (functionp org-ascii-format-inlinetask-function)
-	(funcall org-ascii-format-inlinetask-function
-		 ;; todo.
-		 (and (plist-get info :with-todo-keywords)
-		      (let ((todo (org-element-property
-				   :todo-keyword inlinetask)))
-			(and todo (org-export-data todo info))))
-		 ;; todo-type
-		 (org-element-property :todo-type inlinetask)
-		 ;; priority
-		 (and (plist-get info :with-priority)
-		      (org-element-property :priority inlinetask))
-		 ;; title
-		 (org-export-data (org-element-property :title inlinetask) info)
-		 ;; tags
-		 (and (plist-get info :with-tags)
-		      (org-element-property :tags inlinetask))
-		 ;; contents and width
-		 contents width)
-      ;; Otherwise, use a default template.
-      (let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
-	(org-ascii--indent-string
-	 (concat
-	  ;; Top line, with an additional blank line if not in UTF-8.
-	  (make-string width (if utf8p ?━ ?_))  "\n"
-	  (unless utf8p (concat (make-string width ? ) "\n"))
-	  ;; Add title.  Fill it if wider than inlinetask.
-	  (let ((title (org-ascii--build-title inlinetask info width)))
-	    (if (<= (length title) width) title
-	      (org-ascii--fill-string title width info)))
-	  "\n"
-	  ;; If CONTENTS is not empty, insert it along with
-	  ;; a separator.
-	  (when (org-string-nw-p contents)
-	    (concat (make-string width (if utf8p ?─ ?-)) "\n" contents))
-	  ;; Bottom line.
-	  (make-string width (if utf8p ?━ ?_)))
-	 ;; Flush the inlinetask to the right.
-	 (- org-ascii-text-width org-ascii-global-margin
-	    (if (not (org-export-get-parent-headline inlinetask)) 0
-	      org-ascii-inner-margin)
-	    (org-ascii--current-text-width inlinetask info)))))))
+    (funcall org-ascii-format-inlinetask-function
+	     ;; todo.
+	     (and (plist-get info :with-todo-keywords)
+		  (let ((todo (org-element-property
+			       :todo-keyword inlinetask)))
+		    (and todo (org-export-data todo info))))
+	     ;; todo-type
+	     (org-element-property :todo-type inlinetask)
+	     ;; priority
+	     (and (plist-get info :with-priority)
+		  (org-element-property :priority inlinetask))
+	     ;; title
+	     (org-export-data (org-element-property :title inlinetask) info)
+	     ;; tags
+	     (and (plist-get info :with-tags)
+		  (org-element-property :tags inlinetask))
+	     ;; contents and width
+	     contents width inlinetask info)))
 
 
 ;;;; Italic

lisp/ox-html.el

@@ -567,7 +567,8 @@ Warning: non-nil may break indentation of source code blocks."
 
 ;;;; Drawers
 
-(defcustom org-html-format-drawer-function nil
+(defcustom org-html-format-drawer-function
+  (lambda (name contents) contents)
   "Function called to format a drawer in HTML code.
 
 The function must accept two parameters:
@@ -579,9 +580,7 @@ The function should return the string to be exported.
 For example, the variable could be set to the following function
 in order to mimic default behaviour:
 
-\(defun org-html-format-drawer-default \(name contents\)
-  \"Format a drawer element for HTML export.\"
-  contents\)"
+The default value simply returns the value of CONTENTS."
   :group 'org-export-html
   :version "24.4"
   :package-version '(Org . "8.0")
@@ -626,7 +625,7 @@ document title."
   :group 'org-export-html
   :type 'integer)
 
-(defcustom org-html-format-headline-function nil
+(defcustom org-html-format-headline-function 'ignore
   "Function to format headline text.
 
 This function will be called with 5 arguments:
@@ -655,7 +654,7 @@ attributes, when appropriate."
 
 ;;;; Inlinetasks
 
-(defcustom org-html-format-inlinetask-function nil
+(defcustom org-html-format-inlinetask-function 'ignore
   "Function called to format an inlinetask in HTML code.
 
 The function must accept six parameters:
@@ -674,7 +673,7 @@ The function should return the string to be exported."
 
 ;;;; LaTeX
 
-(defcustom org-html-with-latex org-export-with-latex
+(defcustom org-html-with-latex t
   "Non-nil means process LaTeX math snippets.
 
 When set, the exporter will process LaTeX environments and
@@ -695,6 +694,7 @@ t              Synonym for `mathjax'."
   :group 'org-export-html
   :version "24.4"
   :package-version '(Org . "8.0")
+  :set (lambda (var val) (set-default var org-export-with-latex))
   :type '(choice
 	  (const :tag "Do not process math in any way" nil)
 	  (const :tag "Use dvipng to make images" dvipng)
@@ -2009,7 +2009,7 @@ INFO is a plist used as a communication channel."
 			  #'number-to-string
 			  (org-export-get-headline-number headline info)
 			  "-"))))
-	    (apply (if (functionp org-html-format-headline-function)
+	    (apply (if (not (eq org-html-format-headline-function 'ignore))
 		       (lambda (todo todo-type priority text tags &rest ignore)
 			 (funcall org-html-format-headline-function
 				  todo todo-type priority text tags))
@@ -2254,7 +2254,7 @@ holding contextual information."
 						       headline-number "-"))))
 	 (format-function
 	  (cond ((functionp format-function) format-function)
-		((functionp org-html-format-headline-function)
+		((not (eq org-html-format-headline-function 'ignore))
 		 (lambda (todo todo-type priority text tags &rest ignore)
 		   (funcall org-html-format-headline-function
 			    todo todo-type priority text tags)))
@@ -2381,9 +2381,9 @@ contextual information."
 CONTENTS holds the contents of the block.  INFO is a plist
 holding contextual information."
   (cond
-   ;; If `org-html-format-inlinetask-function' is provided, call it
+   ;; If `org-html-format-inlinetask-function' is not 'ignore, call it
    ;; with appropriate arguments.
-   ((functionp org-html-format-inlinetask-function)
+   ((not (eq org-html-format-inlinetask-function 'ignore))
     (let ((format-function
 	   (function*
 	    (lambda (todo todo-type priority text tags

lisp/ox-latex.el

@@ -556,7 +556,8 @@ returned as-is."
 
 ;;;; Drawers
 
-(defcustom org-latex-format-drawer-function nil
+(defcustom org-latex-format-drawer-function
+  (lambda (name contents) contents)
   "Function called to format a drawer in LaTeX code.
 
 The function must accept two parameters:
@@ -565,19 +566,16 @@ The function must accept two parameters:
 
 The function should return the string to be exported.
 
-For example, the variable could be set to the following function
-in order to mimic default behaviour:
-
-\(defun org-latex-format-drawer-default \(name contents\)
-  \"Format a drawer element for LaTeX export.\"
-  contents\)"
+The default function simply returns the value of CONTENTS."
   :group 'org-export-latex
+  :version "24.4"
+  :package-version '(Org . "8.3")
   :type 'function)
 
 
 ;;;; Inlinetasks
 
-(defcustom org-latex-format-inlinetask-function nil
+(defcustom org-latex-format-inlinetask-function 'ignore
   "Function called to format an inlinetask in LaTeX code.
 
 The function must accept six parameters:
@@ -1212,12 +1210,8 @@ channel."
 CONTENTS holds the contents of the block.  INFO is a plist
 holding contextual information."
   (let* ((name (org-element-property :drawer-name drawer))
-	 (output (if (functionp org-latex-format-drawer-function)
-		     (funcall org-latex-format-drawer-function
-			      name contents)
-		   ;; If there's no user defined function: simply
-		   ;; display contents of the drawer.
-		   contents)))
+	 (output (funcall org-latex-format-drawer-function
+			  name contents)))
     (org-latex--wrap-label drawer output)))
 
 
@@ -1502,7 +1496,7 @@ holding contextual information."
 		       (org-element-property :priority inlinetask))))
     ;; If `org-latex-format-inlinetask-function' is provided, call it
     ;; with appropriate arguments.
-    (if (functionp org-latex-format-inlinetask-function)
+    (if (not (eq org-latex-format-inlinetask-function 'ignore))
 	(funcall org-latex-format-inlinetask-function
 		 todo todo-type priority title tags contents)
       ;; Otherwise, use a default template.

lisp/ox-odt.el

@@ -646,7 +646,8 @@ values.  See Info node `(emacs) File Variables'."
 
 ;;;; Drawers
 
-(defcustom org-odt-format-drawer-function nil
+(defcustom org-odt-format-drawer-function
+  (lambda (name contents) contents)
   "Function called to format a drawer in ODT code.
 
 The function must accept two parameters:
@@ -655,21 +656,16 @@ The function must accept two parameters:
 
 The function should return the string to be exported.
 
-For example, the variable could be set to the following function
-in order to mimic default behaviour:
-
-\(defun org-odt-format-drawer-default \(name contents\)
-  \"Format a drawer element for ODT export.\"
-  contents\)"
+The default value simply returns the value of CONTENTS."
   :group 'org-export-odt
   :version "24.4"
-  :package-version '(Org . "8.0")
+  :package-version '(Org . "8.3")
   :type 'function)
 
 
 ;;;; Headline
 
-(defcustom org-odt-format-headline-function nil
+(defcustom org-odt-format-headline-function 'ignore
   "Function to format headline text.
 
 This function will be called with 5 arguments:
@@ -688,7 +684,7 @@ The function result will be used as headline text."
 
 ;;;; Inlinetasks
 
-(defcustom org-odt-format-inlinetask-function nil
+(defcustom org-odt-format-inlinetask-function 'ignore
   "Function called to format an inlinetask in ODT code.
 
 The function must accept six parameters:
@@ -708,7 +704,7 @@ The function should return the string to be exported."
 
 ;;;; LaTeX
 
-(defcustom org-odt-with-latex org-export-with-latex
+(defcustom org-odt-with-latex t
   "Non-nil means process LaTeX math snippets.
 
 When set, the exporter will process LaTeX environments and
@@ -729,6 +725,7 @@ t              Synonym for `mathjax'."
   :group 'org-export-odt
   :version "24.4"
   :package-version '(Org . "8.0")
+  :set (lambda (var val) (set-default var org-export-with-latex))
   :type '(choice
 	  (const :tag "Do not process math in any way" nil)
 	  (const :tag "Use dvipng to make images" dvipng)
@@ -1626,12 +1623,8 @@ channel."
 CONTENTS holds the contents of the block.  INFO is a plist
 holding contextual information."
   (let* ((name (org-element-property :drawer-name drawer))
-	 (output (if (functionp org-odt-format-drawer-function)
-		     (funcall org-odt-format-drawer-function
-			      name contents)
-		   ;; If there's no user defined function: simply
-		   ;; display contents of the drawer.
-		   contents)))
+	 (output (funcall org-odt-format-drawer-function
+			  name contents)))
     output))
 
 
@@ -1812,10 +1805,10 @@ INFO is a plist holding contextual information."
 						   headline-number "-")))
 	 (format-function (cond
 			   ((functionp format-function) format-function)
-			   ((functionp org-odt-format-headline-function)
+			   ((not (eq org-odt-format-headline-function 'ignore))
 			    (function*
 			     (lambda (todo todo-type priority text tags
-				      &allow-other-keys)
+					   &allow-other-keys)
 			       (funcall org-odt-format-headline-function
 					todo todo-type priority text tags))))
 			   (t 'org-odt-format-headline))))
@@ -1938,9 +1931,9 @@ contextual information."
 CONTENTS holds the contents of the block.  INFO is a plist
 holding contextual information."
   (cond
-   ;; If `org-odt-format-inlinetask-function' is provided, call it
+   ;; If `org-odt-format-inlinetask-function' is not 'ignore, call it
    ;; with appropriate arguments.
-   ((functionp org-odt-format-inlinetask-function)
+   ((not (eq org-odt-format-inlinetask-function 'ignore))
     (let ((format-function
 	   (function*
 	    (lambda (todo todo-type priority text tags

lisp/ox-texinfo.el

@@ -143,7 +143,7 @@
 
 ;;; Preamble
 
-(defcustom org-texinfo-filename nil
+(defcustom org-texinfo-filename ""
   "Default filename for Texinfo output."
   :group 'org-export-texinfo
   :type '(string :tag "Export Filename"))
@@ -202,7 +202,7 @@ a format string in which the section title will be added."
 
 ;;; Headline
 
-(defcustom org-texinfo-format-headline-function nil
+(defcustom org-texinfo-format-headline-function 'ignore
   "Function to format headline text.
 
 This function will be called with 5 arguments:
@@ -316,7 +316,8 @@ returned as-is."
 
 ;;; Drawers
 
-(defcustom org-texinfo-format-drawer-function nil
+(defcustom org-texinfo-format-drawer-function
+  (lambda (name contents) contents)
   "Function called to format a drawer in Texinfo code.
 
 The function must accept two parameters:
@@ -325,18 +326,15 @@ The function must accept two parameters:
 
 The function should return the string to be exported.
 
-For example, the variable could be set to the following function
-in order to mimic default behaviour:
-
-\(defun org-texinfo-format-drawer-default \(name contents\)
-  \"Format a drawer element for Texinfo export.\"
-  contents\)"
+The default function simply returns the value of CONTENTS."
   :group 'org-export-texinfo
+  :version "24.4"
+  :package-version '(Org . "8.3")
   :type 'function)
 
 ;;; Inlinetasks
 
-(defcustom org-texinfo-format-inlinetask-function nil
+(defcustom org-texinfo-format-inlinetask-function 'ignore
   "Function called to format an inlinetask in Texinfo code.
 
 The function must accept six parameters:
@@ -882,12 +880,8 @@ contextual information."
 CONTENTS holds the contents of the block.  INFO is a plist
 holding contextual information."
   (let* ((name (org-element-property :drawer-name drawer))
-	 (output (if (functionp org-texinfo-format-drawer-function)
-		     (funcall org-texinfo-format-drawer-function
-			      name contents)
-		   ;; If there's no user defined function: simply
-		   ;; display contents of the drawer.
-		   contents)))
+	 (output (funcall org-texinfo-format-drawer-function
+			  name contents)))
     output))
 
 ;;; Dynamic Block
@@ -1036,7 +1030,7 @@ holding contextual information."
 	 ;; Create the headline text along with a no-tag version.  The
 	 ;; latter is required to remove tags from table of contents.
 	 (full-text (org-texinfo--sanitize-content
-		     (if (functionp org-texinfo-format-headline-function)
+		     (if (not (eq org-texinfo-format-headline-function 'ignore))
 			 ;; User-defined formatting function.
 			 (funcall org-texinfo-format-headline-function
 				  todo todo-type priority text tags)
@@ -1051,7 +1045,7 @@ holding contextual information."
 				  (mapconcat 'identity tags ":")))))))
 	 (full-text-no-tag
 	  (org-texinfo--sanitize-content
-	   (if (functionp org-texinfo-format-headline-function)
+	   (if (not (eq org-texinfo-format-headline-function 'ignore))
 	       ;; User-defined formatting function.
 	       (funcall org-texinfo-format-headline-function
 			todo todo-type priority text nil)
@@ -1153,7 +1147,7 @@ holding contextual information."
 		       (org-element-property :priority inlinetask))))
     ;; If `org-texinfo-format-inlinetask-function' is provided, call it
     ;; with appropriate arguments.
-    (if (functionp org-texinfo-format-inlinetask-function)
+    (if (not (eq org-texinfo-format-inlinetask-function 'ignore))
 	(funcall org-texinfo-format-inlinetask-function
 		 todo todo-type priority title tags contents)
       ;; Otherwise, use a default template.

lisp/ox.el

@@ -822,7 +822,7 @@ automatically.  But you can retrieve them with \\[org-export-stack]."
   :package-version '(Org . "8.0")
   :type 'boolean)
 
-(defcustom org-export-async-init-file user-init-file
+(defcustom org-export-async-init-file "~/.emacs.el"
   "File used to initialize external export process.
 Value must be an absolute file name.  It defaults to user's
 initialization file.  Though, a specific configuration makes the
@@ -830,6 +830,7 @@ process faster and the export more portable."
   :group 'org-export-general
   :version "24.4"
   :package-version '(Org . "8.0")
+  :set (lambda (var val) (set-default var user-init-file))
   :type '(file :must-match t))
 
 (defcustom org-export-dispatch-use-expert-ui nil